2. Academic Validation
  3. Rejuvenation of BMSCs senescence by pharmacological enhancement of TFEB-mediated autophagy alleviates aged-related bone loss and extends lifespan in middle aged mice

Rejuvenation of BMSCs senescence by pharmacological enhancement of TFEB-mediated autophagy alleviates aged-related bone loss and extends lifespan in middle aged mice

  • Bone Res. 2024 Aug 21;12(1):45. doi: 10.1038/s41413-024-00351-7.
Ziwei Luo # 1,  Wanyi Wei # 2,  Dawei Qiu 3,  Zixia Su 4,  Liangpu Liu 5,  Honghai Zhou 5,  Hao Cui 6,  Li Yang 7
Affiliations

Affiliations

  • 1 College of Orthopedics, Guangxi University of Chinese Medicine, Nanning, 530200, Guangxi, China. luo.ziwei@live.cn.
  • 2 Faculty of Chinese Medicine Science, Guangxi University of Chinese Medicine, Nanning, 530200, Guangxi, China.
  • 3 Department of Physical Education, Guangxi University of Chinese Medicine, Nanning, 530200, Guangxi, China.
  • 4 Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Guangxi University of Chinese Medicine, Nanning, 530200, Guangxi, China.
  • 5 College of Orthopedics, Guangxi University of Chinese Medicine, Nanning, 530200, Guangxi, China.
  • 6 College of Pharmacy, Guangxi University of Chinese Medicine, Nanning, 530200, Guangxi, China. ch008szx6@163.com.
  • 7 Key Laboratory of Biorheological Science and Technology, Ministry of Education, Bioengineering College, Chongqing University, Chongqing, 400030, China.
  • # Contributed equally.
PMID: 39164234 DOI: 10.1038/s41413-024-00351-7
Abstract

Bone marrow stromal/stem cells (BMSCs) are generally considered as common progenitors for both osteoblasts and adipocytes in the bone marrow, but show preferential differentiation into adipocytes rather than osteoblasts under aging, thus leading to senile osteoporosis. Accumulated evidences indicate that rejuvenation of BMSCs by autophagic enhancement delays bone aging. Here we synthetized and demonstrated a novel Autophagy activator, CXM102 that could induce Autophagy in aged BMSCs, resulting in rejuvenation and preferential differentiation into osteoblasts of BMSCs. Furthermore, CXM102 significantly stimulated bone anabolism, reduced marrow adipocytes, and delayed bone loss in middle-age male mice. Mechanistically, CXM102 promoted transcription factor EB (TFEB) nuclear translocation and favored osteoblasts formation both in vitro and in vivo. Moreover, CXM102 decreased serum levels of inflammation and reduced organ fibrosis, leading to a prolonger lifespan in male mice. Our results indicated that CXM102 could be used as an Autophagy inducer to rejuvenate BMSCs and shed new lights on strategies for senile osteoporosis and healthyspan improvement.

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