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[(high-dose)-540.7(burst.)]TJ
6.7246 0 0 5.9768 128.296 346.2235 Tm
(1)Tj
8.9663 0 0 8.9663 136.4598 342.1983 Tm
[(Therefore,)-538.4(many)-542.3(efforts)-537.2(have)-541(been)-538.7(per-)]TJ
-8.302 -1.2203 TD
[(formed)-567.1(to)-566(develop)-561.3(slow-delivery)-569.2(systems)-569(to)-566(signicantly)]TJ
T*
[(enhance)-337.5(the)-332.5(efciency)-342(of)-332(BMPs)-333.3(in)-335.7(promoting)-333.1(the)-338.9(osteogenic)]TJ
0 -1.2266 TD
[(differentiation)-455(of)-452.2(ASCs)]TJ
/F4 1 Tf
10.8754 0 TD
[(in)-448.9(vitro)]TJ
/F3 1 Tf
3.6357 0 TD
(and)Tj
/F4 1 Tf
2.1245 0 TD
[(in)-448.9(vivo)]TJ
/F3 1 Tf
2.9781 0 TD
[(.)-451.8(ASCs)-450.3(and)-448.5(the)]TJ
-19.6137 -1.2203 TD
[(BMP-slow-delivery)-370.5(scaffolds)-372.1(synergistically)-368.4(enhance)-369.2(the)-370.5(os-)]TJ
T*
[(teogenic)-506.8(events.)-514.5(Composite)-509.4(scaffolds)-504.9(that)-509.7(comprise)-505.9(of)-509.1(or-)]TJ
0 -1.2266 TD
[(ganic)-598.2(and)-593.9(inorganic)-602.2(phases)-601.1(are)-594.5(especially)-598(promising)-600.3(for)]TJ
0 -1.2203 TD
[(inducing)-685.8(osteogenesis)-691.2(of)-679.8(ASCs.)-687.2(For)-684.4(example,)-683.4(a)-682.4(HA/)]TJ
/F9 1 Tf
25.7912 0 TD
(b)Tj
/F3 1 Tf
.5564 0 TD
(-)Tj
-26.3476 -1.2203 TD
[(tricalcium)-362.8(phosphate)-367.5(\()]TJ
/F9 1 Tf
10.0218 0 TD
(b)Tj
/F3 1 Tf
.5501 0 TD
[(-TCP\))-365.9(scaffold)-364.4(that)-364.2(can)-362.6(facilitate)-364.3(the)]TJ
-10.5719 -1.2203 TD
[(sustained)-431.1(release)-422.1(of)-426.9(BMP-2)-426.8(over)-427.7(a)-423.1(20-day)-423.7(period)-428.6(has)-421.5(been)]TJ
0 -1.2266 TD
[(shown)-467.7(to)-464.8(signicantly)-472.4(augment)-461.9(the)-471.6(osteogenic)-466.7(differentia-)]TJ
0 -1.2203 TD
[(tion)-244.1(of)-243.5(ASCs)]TJ
/F4 1 Tf
5.7286 0 TD
[(in)-240.3(vitro)]TJ
/F3 1 Tf
2.9781 0 TD
(.)Tj
6.7246 0 0 5.9768 142.3559 225.6377 Tm
(46)Tj
8.9663 0 0 8.9663 151.2566 221.6693 Tm
[(In)-239.5(addition,)-243.4(many)-245.2(other)-247.5(scaffolds)-245.6(with)]TJ
-9.9523 -1.2203 TD
[(similar)-439.6(properties)-442(have)-433.5(shown)-442.4(promise)-437.1(in)-436.9(this)-438.7(type)-436.1(of)-439.5(ap-)]TJ
0 -1.2267 TD
[(plication,)-646.3(for)-642.6(example,)-645.5(a)-638.1(poly)-644.4(\(DL-lactic-coglycolic)-647.6(acid\))]TJ
0 -1.2203 TD
[(\(PLGA\))-315.3(scaffold)-313.9(with)-312.5(a)-315.7(brin/hyaluronic)-311.8(acid)-315.2(coating)]TJ
6.7246 0 0 5.9768 276.5479 192.7559 Tm
(47)Tj
8.9663 0 0 8.9663 286.0724 188.7874 Tm
(and)Tj
-24.9881 -1.2203 TD
[(a)-416.8(gelatin/)]TJ
/F9 1 Tf
4.4956 0 TD
(b)Tj
/F3 1 Tf
.5564 0 TD
[(-TCP)-409.7(scaffold.)]TJ
6.7246 0 0 5.9768 163.9559 181.8141 Tm
(48)Tj
8.9663 0 0 8.9663 174.3873 177.8456 Tm
[(These)-418.5(slow-release)-419.1(systems)-417.3(can)]TJ
-12.532 -1.2266 TD
[(stimulate)-368.1(osteogenic)-365.5(differentiation,)-375.7(extracellular)-368.2(matrix)-364.3(de-)]TJ
0 -1.2203 TD
[(position,)-319.2(maturation,)-309.4(and)-315.7(mineralization)-318(of)-306.7(ASCs.)]TJ
6.7246 0 0 5.9768 259.9369 159.874 Tm
(49)Tj
8.9663 0 0 8.9663 269.4613 155.9055 Tm
(Further,)Tj
-23.1355 -1.2203 TD
[(besides)-373.8(the)-376.8(slowly)-377.6(released)-374.5(BMP-2,)-372.8(the)-376.8(scaffold)-377.1(biomaterial)]TJ
0 -1.2266 TD
[(itself)-293.7(may)-286(also)-285.3(play)-287(a)-290.4(role)-285.1(in)-291.4(the)-288.3(osteogenic)-289.6(differentiation)-296.9(of)]TJ
0 -1.2203 TD
(ASCs)Tj
/F4 1 Tf
2.8453 0 TD
[(in)-429.9(vitro)]TJ
/F3 1 Tf
3.1678 0 TD
(.)Tj
6.7246 0 0 5.9768 118.148 126.9921 Tm
(48)Tj
8.9663 0 0 8.9663 128.7496 123.0236 Tm
[(These)-431.1(benets)-429.7(can)-432.1(be)-427.9(attributed)-431.1(to)-433.2(the)-427.4(in-)]TJ
-7.4421 -1.2203 TD
[(teraction)-269.3(between)-268.8(BMP-2)-268.7(and)]TJ
/F9 1 Tf
13.2149 0 TD
(b)Tj
/F3 1 Tf
.5501 0 TD
[(-TCP:)-267.2(BMP-2)-268.7(can)-267.7(increase)-266.8(the)]TJ
-13.765 -1.2203 TD
[(dissolution)-425.3(of)]TJ
/F9 1 Tf
6.5569 0 TD
(b)Tj
/F3 1 Tf
.5501 0 TD
[(-TCP,)-425.2(while)]TJ
/F9 1 Tf
5.7602 0 TD
(b)Tj
/F3 1 Tf
.5501 0 TD
[(-TCP)-422.3(can)-419.5(resorb)-420.8(BMP-2)-426.8(from)]TJ
-13.4172 -1.2266 TD
[(media)-250.1(and)-246.2(provide)-245.9(Ca)]TJ
6.7246 0 0 5.9768 149.7826 94.1669 Tm
(2)Tj
/F8 1 Tf
.6744 0 TD
(+)Tj
/F3 1 Tf
8.9663 0 0 8.9663 161.348 90.1417 Tm
[(and)-246.2(PO)]TJ
6.7246 0 0 5.9768 190.9417 88.6677 Tm
(4)Tj
.4974 .9201 TD
(3)Tj
/F8 1 Tf
.666 0 TD
(-)Tj
/F3 1 Tf
8.9663 0 0 8.9663 205.8519 90.1417 Tm
[(that)-244.1(are)-246.7(needed)-249.4(for)-250.5(bone)]TJ
-16.0412 -1.2203 TD
(mineralization.)Tj
6.7246 0 0 5.9768 121.3228 83.1685 Tm
(45)Tj
8.9663 0 0 8.9663 72 68.2583 Tm
[(Consistent)-819.7(with)-812(the)-813.1(ndings)-812.4(of)]TJ
/F4 1 Tf
16.5281 0 TD
[(in)-809.3(vitro)]TJ
/F3 1 Tf
4.3628 0 TD
[(studies,)-816.8(a)]TJ
-22.0037 -1.2267 TD
[(controlled-released)-400.6(system)-390.7(is)-390.5(thought)-389.3(to)-395.3(maximize)-389(the)-389.4(pro-)]TJ
27.9978 74.5598 TD
[(moting)-378.9(effect)-379.9(of)-376.3(BMPs)-377.5(on)-379.2(the)]TJ
/F4 1 Tf
13.6385 0 TD
[(in)-379.4(vivo)]TJ
/F3 1 Tf
3.2816 0 TD
[(osteogenesis)-381.4(of)-376.3(ASCs.)]TJ
-16.9201 -1.2203 TD
[(For)-380.9(example,)-379.9(a)-378.9(PLGA/HA)-375.6(composite)-382(scaffold)-383.4(is)-377.9(capable)-374.2(of)]TJ
0 -1.2266 TD
[(releasing)-401.9(BMP-2)-401.5(over)-396.1(a)-397.9(4-week)-397.8(period)]TJ
/F4 1 Tf
17.7421 0 TD
[(in)-398.3(vitro)]TJ
/F3 1 Tf
3.5345 0 TD
[(and)-397.9(thereby)]TJ
-21.2766 -1.2203 TD
[(stimulates)-565.4(bone)-554.2(regeneration)-562.3(following)-557.2(transplantation)-560.8(of)]TJ
T*
[(undifferentiated)-345.5(human)-340.3(ASCs)]TJ
/F4 1 Tf
13.6322 0 TD
[(in)-335.1(vivo)]TJ
/F3 1 Tf
2.8643 0 TD
(.)Tj
6.7246 0 0 5.9768 463.2377 685.9274 Tm
(49)Tj
8.9663 0 0 8.9663 472.9889 681.9589 Tm
[(This)-333.7(method)-335.9(avoids)]TJ
-17.8369 -1.2266 TD
(an)Tj
/F4 1 Tf
1.5554 0 TD
[(in)-480.5(vitro)]TJ
/F3 1 Tf
3.6989 0 TD
[(culture)-480.8(period,)-482.1(and)-480.1(thus)-487.1(maximally)-479.2(favors)-479.7(the)]TJ
-5.2543 -1.2203 TD
[(application)-416.6(potential)-419.6(of)-407.9(ASCs)-412.3(in)-411.6(clinic.)-413.8(The)-410.9(contribution)-418.1(of)]TJ
T*
[(the)-585.5(transplanted)-585.6(human)-580.6(ASCs)-576.7(to)-578.6(newly)-581.9(formed)-579.8(bone)-585.9(is)]TJ
0 -1.2266 TD
[(corroborated)-567.1(by)-558.9(the)-560.2(presence)-562.1(of)-559.7(human)-561.6(nuclear)-564.1(antigen-)]TJ
0 -1.2203 TD
[(positive)-481.5(cells)-475.5(and)-473.8(the)-471.7(expression)-484.2(of)-471.1(specic)-475.6(human)-479.4(osteo-)]TJ
T*
[(genic)-446.8(proteins)-443.4(in)-436.9(the)-440(area)-442.2(of)-439.5(new)-441.2(bone)-440.4(formation)-441.1(in)-443.2(nude)]TJ
T*
[(mice)-335.4(models.)]TJ
6.7246 0 0 5.9768 365.3857 609.2219 Tm
(2,44,49,50)Tj
/F11 1 Tf
8.9663 0 0 8.9663 313.0582 583.3132 Tm
[(Gene)-338.8(technology)]TJ
/F3 1 Tf
1.1128 -1.8336 TD
[(Over)-301.6(the)-307.3(past)-306.2(decade,)-298.4(BMPs)-308(and)-303.1(their)-305.2(signaling)-298.9(have)-307(also)]TJ
-1.1128 -1.2203 TD
[(been)-431.2(introduced)-428.4(using)-425(gene)-424.9(technologies)-429.3(to)-426.9(induce)-427.8(the)-421.1(os-)]TJ
0 -1.2266 TD
[(teogenic)-538.5(differentiation)-543.5(of)-528(ASCs.)-535.4(These)-538.6(gene)-532.4(technologies)]TJ
0 -1.2203 TD
[(include)-355.4(gene)-349(transfection)-356.6(of)-344.7(BMPs)-352.2(and)-347.3(the)-351.5(key)-343.8(BMP)-350.9(signal-)]TJ
T*
[(ing)-384.4(components,)-388.2(and)-379(gene)-387(knockdown)-379.2(of)-382.6(the)-383.1(BMP)-382.5(antago-)]TJ
0 -1.2266 TD
[(nists)-496.9(\(Fig.)-496.3(1\).)-489.8(Human)-495(ASCs)-500.9(transfected)-495.3(with)]TJ
/F4 1 Tf
21.1059 0 TD
(BMP-2)Tj
/F3 1 Tf
3.4586 0 TD
(have)Tj
-24.5645 -1.2203 TD
[(been)-241.6(shown)-233.8(to)-237.2(signicantly)-238.5(promote)-233.2(bone)-238.1(formation)-238.8(in)-234.5(many)]TJ
T*
[(an)16.1(im)17.9(a)13.1(l)-294.4(m)15.1(o)0(d)19.5(e)0(l)15.5(s)0(,)-282.4(i)15.4(nc)16.3(lu)20.4(di)18.8(ng)-279.7(ec)13.5(t)12.2(o)0(p)21.2(i)0(c)-281(b)0(o)18.1(n)0(e)-281.5(i)0(n)18.4(d)0(u)20.9(c)0(t)12.9(i)15.4(on)-284.4(in)-278.8(mi)17.9(ce)19.8(,)]TJ
6.7246 0 0 5.9768 535.6912 494.1353 Tm
[(51)22(5)22(3)]TJ
8.9663 0 0 8.9663 313.0582 479.2251 Tm
[(cr)19(it)15(ic)22.5(al)15.9(-)12.2(s)0(i)20.4(z)0(e)-258.7(b)0(o)18.1(n)0(e)-262.5(d)0(e)22.4(f)0(e)18.6(c)0(t)19.2(s)-273.2(of)-256.2(ra)18.8(ts)17.2(,)]TJ
6.7246 0 0 5.9768 435.3448 483.1936 Tm
[(54)22(,5)25(5)]TJ
8.9663 0 0 8.9663 452.5794 479.2251 Tm
[(a)13.1(n)0(d)-259.3(s)0(p)16.3(i)0(n)18.4(e)-265.5(fu)17.1(si)20.4(on)-259.1(in)-259.8(ra)18.8(ts)17.2(.)]TJ
6.7246 0 0 5.9768 545.5558 483.1936 Tm
(56)Tj
8.9663 0 0 8.9663 313.0582 468.2267 Tm
[(Further,)-443.8(cotransfectio)5.1(n)-446(o)0(f)]TJ
/F4 1 Tf
11.8365 0 TD
(RUNX2)Tj
/F3 1 Tf
3.8696 0 TD
(or)Tj
/F4 1 Tf
1.3721 0 TD
(VEGF)Tj
/F3 1 Tf
3.035 0 TD
(with)Tj
/F4 1 Tf
2.4533 0 TD
(BMP-2)Tj
/F3 1 Tf
3.4081 0 TD
(is)Tj
-25.9745 -1.2203 TD
[(shown)-619.5(to)-622.9(enhance)-622.1(bone)-617.5(regeneration)-612.9(and)-619.2(accelerate)-621.6(the)]TJ
T*
[(healing)-485.6(of)-490.1(segmental)-484.2(defects)-491.2(more)-481.5(effectively)-486.8(than)]TJ
/F4 1 Tf
23.7046 0 TD
(BMP-2)Tj
/F3 1 Tf
-23.7046 -1.2266 TD
(alone)Tj
/F4 1 Tf
2.9275 0 TD
[(in)-562.7(vivo)]TJ
/F3 1 Tf
3.0856 0 TD
(.)Tj
6.7246 0 0 5.9768 369.1842 439.37 Tm
(57,58)Tj
8.9663 0 0 8.9663 389.3668 435.3448 Tm
[(In)-561.9(addition)-556.7(to)]TJ
/F4 1 Tf
7.1575 0 TD
(BMP-2)Tj
/F3 1 Tf
2.9655 0 TD
[(,)-559.3(signicant)-559.3(bone)]TJ
-18.6336 -1.2203 TD
[(formation)-295.7(can)-293(also)-291.7(be)-295.2(achieved)-293.8(by)-293.4(transfection)-293.4(of)-294.1(ASCs)-298.5(with)]TJ
/F4 1 Tf
T*
(BMP-4)Tj
/F3 1 Tf
2.9655 0 TD
(,)Tj
6.7246 0 0 5.9768 341.9149 417.4298 Tm
(32,33)Tj
/F4 1 Tf
8.9663 0 0 8.9663 359.9999 413.4613 Tm
(BMP-6)Tj
/F3 1 Tf
2.9591 0 TD
(,)Tj
6.7246 0 0 5.9768 388.7999 417.4298 Tm
(5)Tj
8.9663 0 0 8.9663 395.1495 413.4613 Tm
(or)Tj
/F4 1 Tf
1.2583 0 TD
(BMP-7)Tj
/F3 1 Tf
2.9591 0 TD
(.)Tj
6.7246 0 0 5.9768 435.2314 417.4298 Tm
(59,60)Tj
8.9663 0 0 8.9663 323.0361 402.4629 Tm
[(On)-303.6(the)-307.3(other)-310.7(hand,)-303.1(the)-307.3(gene)-304.8(knockdown)-309.6(of)]TJ
/F4 1 Tf
19.443 0 TD
(noggin)Tj
/F3 1 Tf
2.8074 0 TD
[(,)-306.4(one)-303.2(of)]TJ
-23.3632 -1.2203 TD
[(the)-389.5(BMP)-388.9(antagonists,)-383.4(signicantly)-390.2(upregulates)-393.2(BMP)-382.5(signal-)]TJ
T*
[(ing)-378.1(and)-379(enhances)-383.1(BMP-2-induced)-377.5(osteogenic)-384.5(differentiation)]TJ
T*
[(of)-370(ASCs)]TJ
/F4 1 Tf
4.0151 0 TD
[(in)-373(vitro)]TJ
/F3 1 Tf
3.4776 0 TD
(and)Tj
/F4 1 Tf
2.0423 0 TD
[(in)-366.7(vivo)]TJ
/F3 1 Tf
2.8959 0 TD
(.)Tj
6.7246 0 0 5.9768 426.7841 373.6062 Tm
(2,61)Tj
8.9663 0 0 8.9663 441.8644 369.6377 Tm
(Interestingly,)Tj
/F4 1 Tf
6.1459 0 TD
(noggin)Tj
/F3 1 Tf
3.1804 0 TD
(knock-)Tj
-23.6919 -1.2266 TD
[(down)-257.4(also)-260(increases)-261.8(angiogenesis,)-257.9(which)-257.8(is)-257.8(essential)-259.5(for)-256.9(bone)]TJ
0 -1.2203 TD
(formation.)Tj
6.7246 0 0 5.9768 354.2739 351.666 Tm
(61)Tj
8.9663 0 0 8.9663 368.7306 347.6975 Tm
[(Moreover,)-862.8(simultaneous)-863.3(overexpression)-867.7(of)]TJ
/F4 1 Tf
-6.2091 -1.2203 TD
(BMP-2)Tj
/F3 1 Tf
3.3385 0 TD
[(and)-366.3(repression)-369(of)]TJ
/F4 1 Tf
8.1629 0 TD
(noggin)Tj
/F3 1 Tf
3.1804 0 TD
[(synergistically)-368.4(enhance)-369.2(the)]TJ
-14.6818 -1.2266 TD
[(osteogenesis)-343.5(of)-332(ASCs.)]TJ
6.7246 0 0 5.9768 399.7416 329.7826 Tm
(62)Tj
/F11 1 Tf
8.9663 0 0 8.9663 313.0582 303.8739 Tm
[(The)-337(induction)-335.2(of)-330.4(endogenous)-336.5(BMPs)]TJ
/F3 1 Tf
1.1128 -1.8336 TD
[(Many)-575.2(active)-572.5(agents)-578.1(can)-571.2(upregulate)-581.6(endogenous)-572.3(BMPs)]TJ
-1.1128 -1.2266 TD
[(\(Fig.)-300.3(2\),)-293.7(which)-302.1(at)-297.2(least)-295.6(partially)-294.8(accounts)-304.6(for)-294.8(their)-298.8(promoting)]TJ
0 -1.2203 TD
[(effect)-487.4(on)-480.4(the)-484.3(osteogenesis)-482.6(of)-483.8(ASCs.)-478.5(The)-486.8(expression)-484.2(of)-477.5(en-)]TJ
T*
[(dogenous)-316.1(BMPs,)-317.2(such)-315.2(as)-310.6(BMP-2,)-315.9(BMP-4,)-309.6(and)-315.7(BMP-6,)-309.6(can)-318.3(be)]TJ
T*
[(detected)-303.1(in)-297.8(osteogenic)-308.6(medium.)]TJ
6.7246 0 0 5.9768 438.5762 247.5779 Tm
(3,37,38)Tj
8.9663 0 0 8.9663 461.4235 243.6094 Tm
[(The)-303.5(expression)-300.9(level)-298.5(of)]TJ
-16.5471 -1.2266 TD
[(endogenous)-344.7(BMPs)-333.3(is)-340(also)-335.9(adopted)-338.8(as)-335.9(an)-331.7(important)-338.6(parame-)]TJ
0 -1.2203 TD
[(ter)-298.2(to)-294.1(evaluate)-295.8(the)-294.6(potency)-289.8(of)-294.1(an)-293.7(osteogenic)-296(medium.)]TJ
6.7246 0 0 5.9768 523.0486 225.6377 Tm
(3,38)Tj
8.9663 0 0 8.9663 537.4487 221.6693 Tm
(The)Tj
-25.0261 -1.2203 TD
[(types)-336.2(of)-332(endogenous)-332(BMPs)-333.3(are)-328.9(also)-329.6(dependent)-336.8(on)-328.6(the)-332.6(types)]TJ
0 -1.2267 TD
[(of)-420.6(active)-420.7(reagents)-426.9(in)-417.9(the)-421.1(osteogenic)-422.4(medium.)-423.2(For)-418.9(example,)]TJ
0 -1.2203 TD
[(endogenous)-344.7(BMP-6)-344.6(can)-337.3(be)-339.4(induced)-342.3(by)-337.6(both)-339.8(dexamethasone)]TJ
T*
[(and)-562.3(vitamin)-565.2(D)]TJ
6.7246 0 0 5.9768 375.4771 176.3149 Tm
(3)Tj
8.9663 0 0 8.9663 378.8787 177.8456 Tm
[(,)-559.3(whereas)-562.8(BMP-2)-559.6(is)-561.3(only)-557.9(detected)-568.7(in)-557(the)]TJ
-7.3409 -1.2266 TD
[(presence)-353.5(of)-344.7(vitamin)-343.9(D)]TJ
6.7246 0 0 5.9768 401.6125 165.3732 Tm
(3)Tj
8.9663 0 0 8.9663 405.0141 166.8472 Tm
(.)Tj
6.7246 0 0 5.9768 407.2251 170.8724 Tm
(38)Tj
8.9663 0 0 8.9663 417.033 166.8472 Tm
[(These)-348.9(results)-350(suggest)-342(that)-351.6(the)-345.2(dif-)]TJ
-11.5962 -1.2203 TD
[(ferent)-403.2(active)-401.8(agents)-394.7(in)-398.9(osteogenic)-403.4(medium)-394.9(induce)-402.5(the)-395.8(oste-)]TJ
T*
[(ogenic)-291.5(differentiation)-296.9(of)-287.8(ASCs)-285.9(through)-288.4(regulating)-293.1(BMPs)-289(and)]TJ
0 -1.2266 TD
[(their)-336.8(signaling)-336.9(pathways.)]TJ
1.1128 -1.2203 TD
[(In)-524(1999,)-519.4(Mundy)]TJ
/F4 1 Tf
7.9732 0 TD
[(et)-519.6(al.)]TJ
/F3 1 Tf
2.1877 0 TD
[(,)-521.4(for)-522.4(the)-515.9(rst)-524(time,)-522.9(reported)-520.9(that)]TJ
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