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胞分化早期下调 VPS13A 的表达,而在分化中后期 [7] CAI S,WU Y,GUILLEN⁃SAMANDER A,et al. In situ ar⁃
(第 4 天开始),VPS13A 的表达逐渐上调,因此推测 chitecture of the lipid transport protein VPS13C at ER ⁃
VPS13A在脂肪细胞分化过程中可能发挥作用。于 lysosome membrane contacts[J]. Proc Natl Acad Sci U S
A,2022,119(29):3769-3778
是运用 CRISPR/Cas9 系统构建了稳定敲降 VPS13A
[8] YESHAW W M,VAN DER ZWAAG M,PINTO F,et al.
的3T3⁃L1单克隆细胞系用于研究VPS13A在脂肪生
Human VPS13A is associated with multiple organelles
成中的作用。本研究首先将对照组细胞和稳定敲
and influences mitochondrial morphology and lipid drop⁃
降 VPS13A 的 3T3⁃L1 单克隆细胞进行了诱导分化,
let motility[J]. eLife,2019,8(37):31-68
于光学显微镜下观察经过诱导分化8 d后细胞的形 [9] BOU MALHAB L J,ABDEL ⁃ RAHMAN W M. Obesity
态。结果表明,敲降 VPS13A 的 3T3⁃L1 细胞内分化 and inflammation:colorectal cancer engines[J]. Curr Mol
程度更高,脂滴生成更多。该结果初步说明了 Pharmacol,2022,15(4):620-646
VPS13A在脂肪细胞分化过程中的重要作用。为了 [10] CHOOI Y C,DING C,MAGKOS F. The epidemiology of
进一步探究VPS13A在脂肪生成和分化中起到的作 obesity[J]. Metabolism,2019,92:6-10
用,将对照组细胞和稳定敲降 VPS13A 的 3T3⁃L1 细 [11] SPALDING K L,ARNER E,WESTERMARK P O,et al.
Dynamics of fat cell turnover in humans[J]. Nature,
胞系进行诱导分化后,BODIPY 和油红染脂滴观察
2008,453(7196):783-787
细胞的脂滴情况,同时用Western blot检测细胞分化
[12] AUDANO M,PEDRETTI S,CARUSO D,et al. Regulato⁃
前后VPS13A及脂肪细胞分化标志物蛋白的表达变
ry mechanisms of the early phase of white adipocyte dif⁃
化,结果显示,VPS13A敲降的细胞分化到第8天时,
ferentiation:an overview[J]. Cell Mol Life Sci,2022,79
分化程度更高,且分化标志物蛋白CEBPβ和PPARγ (3):139-153
均升高,提示 VPS13A 在脂肪的生成中发挥了促进 [13] BAHMAD H F,DAOUK R,AZAR J,et al. Modeling adi⁃
作用。但是VPS13A是如何调控脂滴的数量和脂肪 pogenesis:current and future perspective[J]. Cells,
生成以及VPS13A如何影响到PPARγ蛋白表达水平 2020,9(10).2326-2347
的变化仍需要进一步的研究探索。本研究通过对 [14] ZHAO G N A,TIAN Z W,TIAN T,et al. TMBIM1 is an
3T3⁃L1细胞分化过程中VPS13A的表达水平及调控 inhibitor of adipogenesis and its depletion promotes adipo⁃
的初步探索,为 VPS13A 在脂肪细胞中的功能和作 cyte hyperplasia and improves obesity⁃related metabolic
disease[J]. Cell Metab,2021,33(8):1640-1654
用机制提供了实验基础。
[15] REINISCH K M,PRINZ W A. Mechanisms of nonvesicu⁃
[参考文献] lar lipid transport[J]. J Cell Biol,2021,220(3).2058-2069
[16] MONTEIRO⁃CARDOSO V F,ROCHIN L,ARORA A,et
[1] ASSUMPCAO J A F,PASQUARELLI⁃DO⁃NASCIMEN⁃
TO G,DUARTE M S V,et al. The ambiguous role of obe⁃ al. ORP5/8 and MIB/MICOS link ER ⁃ mitochondria and
sity in oncology by promoting cancer but boosting antitu⁃ intra⁃mitochondrial contacts for non⁃vesicular transport of
mor immunotherapy[J]. J Biomed Sci,2022,29(1):1-27 phosphatidylserine[J]. Cell Rep,2022,40(12):1113-
[2] 季学涛,张 许,李 仲. 脂肪组织中自噬影响肥胖发 1177
病机制的研究进展[J]. 南京医科大学学报(自然科学 [17] JEYASIMMAN D,ERCAN B,DHARMAWAN D,et al.
版). 2023,43(2):275-282 PDZD⁃8 and TEX⁃2 regulate endosomal PI(4,5)P(2)ho⁃
[3] PICHE M E,TCHERNOF A,DESPRES J P. Obesity phe⁃ meostasis via lipid transport to promote embryogenesis in
notypes,diabetes,and cardiovascular diseases[J]. Circ C. elegans[J]. Nat Commun,2021,12(1):26177-26198
Res,2020,126(11):1477-1500 [18] SUCHY T,KACZMAREK I,MARICIC T,et al. Evaluat⁃
[4] 王雨竹,张 许,李 仲. 成熟 SVFs 细胞与 Hepa1⁃6 细 ing the feasibility of Cas9 overexpression in 3T3⁃L1 cells
胞共培养模型的建立及对肝细胞脂代谢的影响[J]. 南 for generation of genetic knock ⁃ out adipocyte cell lines
京医科大学学报(自然科学版). 2022,42(5):603-609 [J]. Adipocyte,2021,10(1):631-645
[5] DZIURDZIK S K,CONIBEAR E. The Vps13 family of lip⁃ [19] KASSOTIS C D,HOFFMAN K,VOLKER J,et al. Repro⁃
id transporters and its role at membrane contact sites[J]. ducibility of adipogenic responses to metabolism disrupt⁃
Int J Mol Sci,2021,22(6):2905-2921 ing chemicals in the 3T3⁃L1 pre⁃adipocyte model system:
[6] PARK J S,NEIMAN A M. XK is a partner for VPS13A:a an interlaboratory study[J]. Toxicology,2021,461(15):
molecular link between Chorea ⁃ Acanthocytosis and 2900-2926
McLeod Syndrome[J]. Mol Biol Cell,2020,31(22): [收稿日期] 2023-03-27
2425-2436 (本文编辑:唐 震)