Department of Biotechnology
inStem (Institute for Stem Cell Science and Regenerative Medicine)

Cytoplasmic poly (A)-binding protein critically regulates epidermal maintenance and turnover in the planarian .

Publication Type

Research Support, Non-U.S. Gov't

Date of Publication

September 1, 2017

Journal

Development (Cambridge, England)

Volume/Issue

144/17

ISSN

1477-9129

Identifying key cellular events that facilitate stem cell function and tissue organization is crucial for understanding the process of regeneration. Planarians are powerful model system to study regeneration and stem cell (neoblast) function. Here, using planaria, we show that the initial events of regeneration, such as epithelialization and epidermal organization are critically regulated by a novel cytoplasmic poly A-binding protein, SMED-PABPC2. Knockdown leads to defects in epidermal lineage specification, disorganization of epidermis and ECM, and deregulated wound healing, resulting in the selective failure of neoblast proliferation near the wound region. Polysome profiling suggests that epidermal lineage transcripts, including , are translationally regulated by SMED-PABPC2 Together, our results uncover a novel role for SMED-PABPC2 in the maintenance of epidermal and ECM integrity, critical for wound healing and subsequent processes for regeneration.

Alternate Journal

Development

PubMed ID

28807897

PubMed Central ID

PMC5611960

Authors

Dhiru Bansal
Jahnavi Kulkarni
Kavana Nadahalli
Vairavan Lakshmanan
Srikar Krishna
Vidyanand Sasidharan
Jini Geo
Shilpa Dilipkumar
Renu Pasricha
Akash Gulyani
Srikala Raghavan
Dasaradhi Palakodeti

Keywords

Gene Knockdown Techniques
Cytoplasm
Poly(A)-Binding Protein I
Extracellular Matrix
Wound Healing
Regeneration
Homeostasis
Animals
Planarians
Cell Lineage
RNA, Messenger
Models, Biological
Cell Proliferation
Epidermis
Epithelium